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Inventory (Tables)
6 Months Ended
Sep. 30, 2021
Inventory [Abstract]  
Inventory Net
Inventory is comprised of the following:

 
 
September 30, 2021
   
March 31, 2021
 
Inventory
           
Raw materials
 
$
149,460,000
   
$
128,190,000
 
Work-in-process
   
8,297,000
     
5,233,000
 
Finished goods
   
173,096,000
     
168,184,000
 
 
   
330,853,000
     
301,607,000
 
Less allowance for excess and obsolete inventory
   
(14,163,000
)
   
(13,246,000
)
Inventory — net
   
316,690,000
     
288,361,000
 
Inventory unreturned
   
13,804,000
     
14,552,000
 
Total inventory
 
$
330,494,000
   
$
302,913,000